If you call this with 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.

Duplicate strings in lang files in /home/viiwdkzxmvgu/public_html/prolimso.msdito.com/dev/translation/../../htdocs/langs/en_US/ - 106 found

#StringFile and lines
1ShowAccountingJournalaccountancy.lang (100 - Show accounting journal) (317 - Show accounting journal)
26IfYouUseASecondTaxYouMustSetYouUseTheMainTaxadmin.lang (2238 - If you want to use a second tax, you must enable also the first sales tax) (2242 - If you want to use a second tax, you must enable also the first sales tax)
27IfYouUseAThirdTaxYouMustSetYouUseTheMainTaxadmin.lang (2239 - If you want to use a third tax, you must enable also the first sales tax) (2243 - If you want to use a third tax, you must enable also the first sales tax)
36AssetDepreciationOptionAcceleratedDepreciationassets.lang (119 - Accelerated depreciation (tax)) (125 - Accelerated (tax))
53ErrorRefAlreadyExistserrors.lang (11 - Reference <b>%s</b> already exists.) (87 - Ref used for creation already exists.)
62NotTheAssignedApproverholiday.lang (77 - You are not the assigned approver) (101 - You are not the assigned approver)
66Language_es_GTlanguages.lang (46 - Spanish (Guatemala)) (55 - Spanish (USA))
75ReasonDeclineOrCancelpartnership.lang (56 - Decline reason) (90 - Reason for declining or canceling)
96unitGproducts.lang (208 - Gram) (216 - Gram)
97unitMproducts.lang (209 - Meter) (220 - Meter)
98unitM2products.lang (211 - Square meter) (226 - Square meter)
99unitM3products.lang (212 - Cubic meter) (232 - Cubic meter)
100ThirdPartyRequiredToGenerateInvoiceprojects.lang (246 - A third party must be defined on project to be able to invoice it.) (247 - A third party must be defined on project to be able to create intervention.)
101NoSignpropal.lang (89 - Set not signed) (108 - Refuse)
102Signpropal.lang (96 - Sign) (107 - Sign)
103Receptionreceptions.lang (5 - Reception) (8 - Reception)
104Receptionsreceptions.lang (6 - Receptions) (9 - Receptions)
106ImportSitewebsite.lang (76 - Import website template) (120 - Import website)
3ByYearaccountancy.lang (222 - By year)
main.lang (833 - By year)
30Eventsagenda.lang (12 - Events)
main.lang (946 - Events)
42ShowDetailsblockedlog.lang (16 - Show stored details)
main.lang (1112 - Show details)
46Browsercashdesk.lang (93 - Browser)
main.lang (751 - Browser)
51StatusToPaycompta.lang (66 - To pay)
main.lang (450 - To pay)
64StatusInterInvoicedinterventions.lang (30 - Billed)
main.lang (541 - Invoiced)
68ConfirmCloneAskmain.lang (189 - Are you sure you want to clone the object <b>%s</b>?)
supplier_proposal.lang (38 - Are you sure you want to clone the price request <b>%s</b>?)
69ReOpenmain.lang (207 - Re-Open)
stocks.lang (253 - Reopen)
70Typemain.lang (239 - Type)
ticket.lang (76 - Type)
71MulticurrencyPaymentAmountmain.lang (390 - Payment amount, original currency)
multicurrency.lang (19 - Payment amount, original currency)
72Rejectsmain.lang (560 - Rejects)
withdrawals.lang (42 - Rejects)
5InternalUseradmin.lang (54 - Internal user)
users.lang (71 - Internal user)
6NewModuleadmin.lang (222 - New module)
modulebuilder.lang (9 - New module)
7NoticePeriodadmin.lang (285 - Notice period)
holiday.lang (113 - Notice period)
8LanguageFileadmin.lang (388 - Language file)
modulebuilder.lang (54 - File for language)
9PriceFormatInCurrentLanguageadmin.lang (430 - Price Format In Current Language)
companies.lang (31 - Price display format in the current language and currency)
10Stringadmin.lang (431 - String)
members.lang (113 - String)
11Intadmin.lang (436 - Integer)
members.lang (115 - Int)
12DateAndTimeadmin.lang (438 - Date and hour)
members.lang (116 - Date and time)
13Fieldadmin.lang (521 - Field)
blockedlog.lang (2 - Field)
exports.lang (65 - Field)
14Upgradeadmin.lang (1136 - Upgrade)
install.lang (99 - Upgrade)
15Serveradmin.lang (1147 - Server)
install.lang (45 - Server)
16DatabaseServeradmin.lang (1149 - Database host)
install.lang (48 - Database server)
17DatabaseNameadmin.lang (1150 - Database name)
install.lang (49 - Database name)
18DriverTypeadmin.lang (1158 - Driver type)
install.lang (44 - Driver type)
19CompanyNameadmin.lang (1179 - Name)
companies.lang (26 - Company name)
20WithdrawalsSetupadmin.lang (1706 - Setup of module Direct Debit payments)
withdrawals.lang (38 - Direct debit payment setup)
21Buyadmin.lang (1793 - Buy)
products.lang (56 - Purchase)
22Selladmin.lang (1794 - Sell)
products.lang (55 - Sell)
23AccountancyCodeadmin.lang (1797 - Accounting Code)
companies.lang (348 - Accounting account)
24CashDeskadmin.lang (1823 - Point of Sale)
cashdesk.lang (3 - Point of sale)
25ByDefaultInListadmin.lang (1987 - Show by default on list view)
categories.lang (96 - By default in list)
28Settings admin.lang (2261 - Settings)
knowledgemanagement.lang (29 - Settings)
recruitment.lang (29 - Settings)
2LineIdaccountancy.lang (140 - Id line)
exports.lang (44 - Id of line)
4CustomerInvoicePaymentaccountancy.lang (239 - Payment of invoice customer)
banks.lang (103 - Customer payment)
29AffectedToagenda.lang (10 - Assigned to)
projects.lang (119 - Allocated to)
31Locationagenda.lang (16 - Location)
stocks.lang (39 - Location)
32ReceptionClassifyClosedInDolibarragenda.lang (70 - Reception %s classified closed)
receptions.lang (52 - Reception %s classified Closed)
33InterventionSentByEMailagenda.lang (88 - Intervention %s sent by email)
interventions.lang (38 - Intervention %s sent by email)
34DeleteTypeassets.lang (24 - Delete)
members.lang (85 - Delete)
35ShowTypeCardassets.lang (27 - Show model '%s')
members.lang (158 - Show type '%s')
37IBANbanks.lang (32 - IBAN number)
bills.lang (473 - IBAN)
38BICbanks.lang (33 - BIC/SWIFT code)
bills.lang (476 - BIC/SWIFT)
39Accountbanks.lang (66 - Account)
compta.lang (15 - Account)
40SubscriptionPaymentbanks.lang (105 - Subscription payment)
members.lang (172 - Contribution payment)
41InvoiceRefbills.lang (343 - Invoice ref.)
receiptprinter.lang (69 - Invoice ref)
43NoSupplierOrderboxes.lang (80 - No recorded purchase order)
orders.lang (87 - No purchase order)
44ShowCompanycashdesk.lang (30 - Show company)
companies.lang (364 - Third Party)
45Historycashdesk.lang (71 - History)
suppliers.lang (7 - History)
47DeleteFromCatcategories.lang (86 - Remove from tags/category)
compta.lang (270 - Remove from accounting group)
48Customercommercial.lang (4 - Customer)
companies.lang (308 - Customer)
49Prospectcommercial.lang (6 - Prospect)
companies.lang (306 - Prospect)
propal.lang (12 - Prospect)
50ShowTaskcommercial.lang (18 - Show task)
projects.lang (39 - Show task)
52ContractStatusClosedcontracts.lang (9 - Closed)
products.lang (85 - Closed)
54ErrorRecordNotFounderrors.lang (16 - Record not found.)
expensereports.lang (7 - Record not found)
55ErrorBadValueForParametererrors.lang (47 - Wrong value '%s' for parameter '%s')
expensereports.lang (9 - Error bad value for parameter %s)
56Settingseventorganization.lang (37 - Settings)
stocks.lang (312 - Settings)
57NewSubscriptioneventorganization.lang (136 - Registration)
members.lang (72 - New contribution)
58ExportsAreaexports.lang (2 - Exports)
other.lang (278 - Exports area)
59ExportableDatasexports.lang (6 - Exportable dataset)
other.lang (282 - Exportable data)
60AvailableFormatsexports.lang (28 - Available Formats)
other.lang (279 - Available formats)
61ChooseFileToImportexports.lang (61 - Upload file then click on the %s icon to select file as source import file...)
stocks.lang (249 - Upload file then click on the %s icon to select file as source import file...)
63CreateUserinstall.lang (55 - Create user account or grant user account permission on the Dolibarr database)
users.lang (31 - Create user)
65About knowledgemanagement.lang (36 - About)
recruitment.lang (38 - About)
67Answeredmails.lang (175 - Answered)
ticket.lang (70 - Answered)
73OrderDateorders.lang (11 - Order date)
suppliers.lang (10 - Order date)
74CreatedByother.lang (117 - Created by %s)
ticket.lang (182 - Created by)
76FollowingUrlAreAvailableToMakePaymentspaybox.lang (4 - Following URLs are available to offer a page to a customer to make a payment on Dolibarr objects)
stripe.lang (5 - Following URLs are available to offer a page to a customer to make a payment on Dolibarr objects)
77PaymentFormpaybox.lang (5 - Payment form)
stripe.lang (6 - Payment form)
78WelcomeOnPaymentPagepaybox.lang (6 - Welcome to our online payment service)
stripe.lang (7 - Welcome to our online payment service)
79ThisScreenAllowsYouToPaypaybox.lang (7 - This screen allow you to make an online payment to %s.)
stripe.lang (8 - This screen allow you to make an online payment to %s.)
80ThisIsInformationOnPaymentpaybox.lang (8 - This is information on payment to do)
stripe.lang (9 - This is information on payment to do)
81ToCompletepaybox.lang (9 - To complete)
stripe.lang (10 - To complete)
82YourEMailpaybox.lang (10 - Email to receive payment confirmation)
stripe.lang (11 - Email to receive payment confirmation)
83Creditorpaybox.lang (11 - Creditor)
stripe.lang (13 - Creditor)
84PaymentCodepaybox.lang (12 - Payment code)
stripe.lang (14 - Payment code)
85Continuepaybox.lang (15 - Next)
stripe.lang (17 - Next)
86AccountParameterpaybox.lang (19 - Account parameters)
stripe.lang (27 - Account parameters)
87UsageParameterpaybox.lang (20 - Usage parameters)
stripe.lang (28 - Usage parameters)
88InformationToFindParameterspaybox.lang (21 - Help to find your %s account information)
stripe.lang (29 - Help to find your %s account information)
89CSSUrlForPaymentFormpaybox.lang (23 - CSS style sheet url for payment form)
stripe.lang (31 - CSS style sheet url for payment form)
90Stockproducts.lang (51 - Stock)
stocks.lang (18 - Stock)
91Stocksproducts.lang (53 - Stocks and location (warehouse) of products)
stocks.lang (19 - Stocks)
92Movementsproducts.lang (54 - Movements)
stocks.lang (27 - Movements)
93Suppliersproducts.lang (90 - Vendors)
suppliers.lang (2 - Vendors)
94ListOfStockMovementsproducts.lang (97 - List of stock movements)
stocks.lang (30 - List of stock movements)
95Unitproducts.lang (182 - Unit)
stocks.lang (46 - Unit)
105NewUserticket.lang (317 - New user)
users.lang (30 - New user)