If you call this file with the argument "?unused=true" it searches for the translation strings that exist in en_US but are never used.
IMPORTANT: that can take quite a lot of time (up to 10 minutes), you need to tune the max_execution_time on your php.ini accordingly.
Happy translating :)

Duplicate strings in lang files in ../../htdocs/langs/en_US/ - 145 found

#StringFile and lines
1Chartofaccountsaccountancy.lang (13 - Chart of accounts)
admin.lang (53 - Chart of accounts)
2Fiscalyearaccountancy.lang (14 - Fiscal years)
admin.lang (54 - Fiscal years)
3Exportsaccountancy.lang (22 - Exports)
members.lang (185 - Exports)
4Exportaccountancy.lang (23 - Export)
other.lang (232 - Export)
5Validateaccountancy.lang (34 - Validate)
main.lang (145 - Validate)
6ToDispatchaccountancy.lang (38 - To dispatch)
compta.lang (171 - To dispatch)
7Dispatchedaccountancy.lang (39 - Dispatched)
compta.lang (170 - Dispatched)
8ByMonthaccountancy.lang (46 - By Month)
main.lang (679 - By month)
9NewAccountaccountancy.lang (47 - New accounting account)
banks.lang (57 - New account)
compta.lang (102 - New account)
10Updateaccountancy.lang (48 - Update)
main.lang (132 - Update)
11Listaccountancy.lang (49 - List)
main.lang (353 - List)
12Createaccountancy.lang (50 - Create)
products.lang (10 - Create)
13Lineaccountancy.lang (61 - Line)
main.lang (648 - Line)
14Debitaccountancy.lang (112 - Debit)
compta.lang (34 - Debit)
15Creditaccountancy.lang (113 - Credit)
compta.lang (35 - Credit)
16Amountaccountancy.lang (114 - Amount)
bills.lang (104 - Amount)
main.lang (308 - Amount)
17SellsJournalaccountancy.lang (120 - Sells journal)
compta.lang (173 - Sales Journal)
18PurchasesJournalaccountancy.lang (121 - Purchases journal)
compta.lang (174 - Purchases Journal)
19DescSellsJournalaccountancy.lang (122 - Sells journal)
compta.lang (175 - Sales Journal)
20DescPurchasesJournalaccountancy.lang (123 - Purchases journal)
compta.lang (176 - Purchases Journal)
21SupplierInvoicePaymentaccountancy.lang (129 - Payment of invoice supplier)
banks.lang (114 - Supplier payment)
22CustomerInvoicePaymentaccountancy.lang (130 - Payment of invoice customer)
banks.lang (112 - Customer payment)
23Accountparentaccountancy.lang (147 - Root of the account)
compta.lang (22 - Account parent)
24Activeaccountancy.lang (148 - Statement)
admin.lang (110 - Active)
25NewFiscalYearaccountancy.lang (150 - New fiscal year)
admin.lang (1622 - New fiscal year)
26Typeaccountancy.lang (178 - Type of fields)
main.lang (192 - Type)
27Paramaccountancy.lang (179 - Additionnal parameters)
compta.lang (16 - Setup)
28InternalUseradmin.lang (36 - Internal user)
users.lang (86 - Internal user)
29Setupadmin.lang (108 - Setup)
main.lang (218 - Setup)
30Datasadmin.lang (196 - Data)
main.lang (447 - Data)
31Yesadmin.lang (203 - Yes)
main.lang (107 - Yes)
32Noadmin.lang (204 - No)
main.lang (109 - No)
33Stringadmin.lang (376 - String)
members.lang (121 - String)
34Intadmin.lang (378 - Integer)
members.lang (123 - Int)
35DateAndTimeadmin.lang (380 - Date and hour)
members.lang (125 - Date and time)
36Upgradeadmin.lang (880 - Upgrade)
install.lang (112 - Upgrade)
37Serveradmin.lang (898 - Server)
install.lang (49 - Server)
38DatabaseServeradmin.lang (900 - Database host)
install.lang (52 - Database server)
39DatabaseNameadmin.lang (901 - Database name)
install.lang (53 - Database name)
40DriverTypeadmin.lang (915 - Driver type)
install.lang (48 - Driver type)
41MenuManageradmin.lang (924 - Menu manager)
main.lang (639 - Menu manager)
42CompanyNameadmin.lang (944 - Name)
companies.lang (32 - Company name)
43FixTZadmin.lang (1107 - TimeZone fix) (1677 - TimeZone fix)
44Miscellaneousadmin.lang (1143 - Miscellaneous)
other.lang (57 - Miscellaneous)
45CreditNoteadmin.lang (1175 - Credit note)
bills.lang (254 - Credit note)
46CreditNotesadmin.lang (1176 - Credit notes)
bills.lang (255 - Credit notes)
47WithdrawalsSetupadmin.lang (1448 - Withdrawal module setup)
withdrawals.lang (29 - Withdrawal setup)
48DeleteLineadmin.lang (1523 - Delete line)
trips.lang (31 - Delete a line of the expense report)
49ConfirmDeleteLineadmin.lang (1524 - Are you sure you want to delete this line ?)
trips.lang (32 - Are you sure you want to delete this line ?)
50Buyadmin.lang (1538 - Buy)
products.lang (54 - Purchases)
51Selladmin.lang (1539 - Sell)
products.lang (53 - Sales)
52AccountancyCodeadmin.lang (1542 - Accountancy Code)
companies.lang (278 - Accountancy code)
53CashDeskadmin.lang (1556 - Point of sales)
cashdesk.lang (3 - Point of sale)
54Openedadmin.lang (1628 - Open)
main.lang (429 - Open)
55Closedadmin.lang (1629 - Closed)
main.lang (123 - Closed)
56Calendaragenda.lang (7 - Calendar)
other.lang (3 - Calendar)
57AffectedToagenda.lang (11 - Assigned to)
projects.lang (92 - Allocated to)
58Locationagenda.lang (19 - Location)
stocks.lang (28 - Location)
59PropalValidatedInDolibarragenda.lang (45 - Proposal %s validated)
other.lang (217 - Proposal %s validated)
60InvoiceValidatedInDolibarragenda.lang (46 - Invoice %s validated)
other.lang (219 - Invoice %s validated)
61InterventionSentByEMailagenda.lang (64 - Intervention %s sent by EMail)
interventions.lang (39 - Intervention %s sent by EMail)
62NewCompanyToDolibarragenda.lang (65 - Third party created)
other.lang (211 - Company %s added)
63IBANbanks.lang (35 - IBAN number)
bills.lang (348 - IBAN)
64BICbanks.lang (38 - BIC/SWIFT number)
bills.lang (349 - BIC/SWIFT)
65StandingOrdersbanks.lang (41 - Standing orders)
bills.lang (202 - Standing orders)
withdrawals.lang (4 - Standing orders)
66StandingOrderbanks.lang (42 - Standing order)
bills.lang (203 - Standing order)
withdrawals.lang (5 - Standing orders)
67Withdrawalsbanks.lang (43 - Withdrawals)
compta.lang (38 - Withdrawals)
withdrawals.lang (9 - Withdrawals)
68Withdrawalbanks.lang (44 - Withdrawal)
compta.lang (37 - Withdrawal)
withdrawals.lang (10 - Withdrawal)
69Accountbanks.lang (78 - Account)
compta.lang (20 - Account)
70StartDatebanks.lang (166 - Start date)
margins.lang (23 - Start date)
71EndDatebanks.lang (167 - End date)
margins.lang (24 - End date)
72Paymentsbills.lang (59 - Payments)
compta.lang (72 - Payments)
73DatePaymentbills.lang (62 - Payment date)
compta.lang (82 - Payment date)
main.lang (247 - Date of payment)
74Filebills.lang (188 - File)
main.lang (519 - File)
75Discountbills.lang (242 - Discount)
main.lang (431 - Discount)
orders.lang (64 - Discount)
76InvoiceRefbills.lang (276 - Invoice ref.)
compta.lang (177 - Invoice ref.)
77BankCodebills.lang (342 - Bank code)
exports.lang (123 - Bank code)
78DeskCodebills.lang (343 - Desk code)
exports.lang (124 - Desk code)
79BankAccountNumberbills.lang (344 - Account number)
exports.lang (125 - Account number)
80BankAccountNumberKeybills.lang (345 - Key)
exports.lang (126 - Key)
81Progressbills.lang (430 - Progress)
projects.lang (68 - Progress)
82ShowCompanycashdesk.lang (36 - Show company)
companies.lang (299 - Show company)
83DeletePicturecategories.lang (103 - Picture delete)
products.lang (140 - Delete a picture)
84ConfirmDeletePicturecategories.lang (104 - Confirm picture deletion?)
products.lang (141 - Are you sure you want to delete this picture ?)
85CommercialCardcommercial.lang (4 - Commercial card)
products.lang (105 - Commercial card)
86Customercommercial.lang (6 - Customer)
companies.lang (247 - Customer)
87Prospectcommercial.lang (8 - Prospect)
companies.lang (245 - Prospect)
propal.lang (15 - Prospect)
88Namecompanies.lang (59 - Name)
main.lang (182 - Name)
89Capitalcompanies.lang (316 - Capital)
loan.lang (8 - Capital)
90NbOfAttachedFilescompanies.lang (364 - Number of attached files)
other.lang (52 - Number of attached files/documents)
91AttachANewFilecompanies.lang (365 - Attach a new file)
other.lang (55 - Attach a new file/document)
92ReCalculatecompta.lang (193 - Recalculate)
main.lang (421 - Recalculate)
93ContractStatuscontracts.lang (7 - Contract status)
products.lang (78 - Contract status)
94ContractStatusRunningcontracts.lang (9 - Running)
products.lang (80 - Ongoing)
95ContractStatusClosedcontracts.lang (12 - Closed)
products.lang (79 - Closed)
96MenuECMecm.lang (2 - Documents)
main.lang (611 - Documents)
97Errorerrors.lang (6 - Error)
main.lang (30 - Error)
98ErrorQtyTooLowForThisSuppliererrors.lang (89 - Quantity too low for this supplier or no price defined on this product for this supplier)
suppliers.lang (18 - Quantity too low for this supplier or no price defined on this product for this supplier)
99ExportsAreaexports.lang (2 - Exports area)
other.lang (233 - Exports area)
100NewExportexports.lang (4 - New export)
other.lang (240 - New export)
101ExportableDatasexports.lang (6 - Exportable dataset)
other.lang (237 - Exportable data)
102AvailableFormatsexports.lang (34 - Available formats)
other.lang (234 - Available formats)
103LibraryUsedexports.lang (36 - Library used)
other.lang (235 - Librairy used)
104LibraryVersionexports.lang (37 - Version)
other.lang (236 - Version)
105ClickHerehelp.lang (7 - Click here)
other.lang (191 - Click here)
106Employeeholiday.lang (82 - Employee)
salaries.lang (6 - Employee)
107Logininstall.lang (55 - Login)
main.lang (454 - Login)
108Passwordinstall.lang (57 - Password)
main.lang (179 - Password)
109CreateUserinstall.lang (61 - Create owner)
users.lang (38 - Create user)
110Deprecatedinstall.lang (66 - (deprecated))
main.lang (126 - Deprecated)
111DatabaseConnectioninstall.lang (72 - Database connection)
main.lang (26 - Database connection)
112Examplesinstall.lang (95 - Examples)
main.lang (525 - Examples)
113NotAvailableinstall.lang (116 - Not available)
main.lang (402 - Not available)
114ConfirmResetMailingmails.lang (53 - Warning, by reinitializing emailing <b>%s</b>, you allow to make a mass sending of this email another time. Are you sure you this is what you want to do ?)
sms.lang (42 - Warning, if you make a reinit of Sms campain <b>%s</b>, you will allow to make a mass sending of it a second time. Is it really what you wan to do ?)
115ConfirmDeleteMailingmails.lang (54 - Are you sure you want to delete this emailling ?)
sms.lang (43 - Do you confirm removing of campain ?)
116NbOfRecipientsmails.lang (55 - Number of recipients)
sms.lang (44 - Number of targets)
117DateSendingmails.lang (73 - Date sending)
sendings.lang (29 - Shipping date)
118Administratormain.lang (80 - Administrator)
users.lang (44 - Administrator)
119Notemain.lang (195 - Note)
trips.lang (56 - Note)
120Datemain.lang (226 - Date)
members.lang (124 - Date)
121Statusmain.lang (357 - Status)
withdrawals.lang (51 - Status)
122Quantitymain.lang (414 - Quantity)
products.lang (132 - Quantity)
123Sizemain.lang (434 - Size)
other.lang (141 - size)
124AddPhotomain.lang (453 - Add picture)
products.lang (101 - Add photo)
125SetLinkToThirdPartymain.lang (669 - Link to another third party)
members.lang (24 - Link to a Dolibarr third party)
126Naturemembers.lang (183 - Nature)
products.lang (191 - Nature)
127OrderDateorders.lang (10 - Order date)
suppliers.lang (10 - Order date)
128ClassifyBilledorders.lang (105 - Classify billed)
propal.lang (65 - Classify billed)
129QtyOrderedorders.lang (154 - Qty ordered)
sendings.lang (23 - Qty ordered)
130Notify_ORDER_SUPPLIER_VALIDATEother.lang (15 - Supplier order recorded) (32 - Supplier order validated)
131Warehouseproducts.lang (45 - Warehouse)
stocks.lang (3 - Warehouse)
132Warehousesproducts.lang (46 - Warehouses)
stocks.lang (4 - Warehouses)
133WarehouseOpenedproducts.lang (47 - Warehouse open)
stocks.lang (8 - Warehouse open)
134WarehouseClosedproducts.lang (48 - Warehouse closed)
stocks.lang (9 - Warehouse closed)
135Stockproducts.lang (49 - Stock)
stocks.lang (17 - Stock)
136Stocksproducts.lang (50 - Stocks)
stocks.lang (18 - Stocks)
137Movementproducts.lang (51 - Movement)
stocks.lang (20 - Movement)
138Movementsproducts.lang (52 - Movements)
stocks.lang (21 - Movements)
139Suppliersproducts.lang (89 - Suppliers)
suppliers.lang (2 - Suppliers)
140CorrectStockproducts.lang (100 - Correct stock)
stocks.lang (24 - Correct stock)
141ListOfStockMovementsproducts.lang (102 - List of stock movements)
stocks.lang (26 - List of stock movements)
142BuyingPriceproducts.lang (103 - Buying price)
suppliers.lang (11 - Buying price)
143Unitproducts.lang (193 - Unit)
stocks.lang (35 - Unit)
144Projectprojects.lang (6 - Project)
trips.lang (57 - Project)
145OpenedProjectsprojects.lang (31 - Opened projects) (102 - Opened projects)