>I need to know more about this to help. What does TableMaintenance do? Is it a PRG, APP, EXE...? Does it have UI?

It's an app. It basically uses two non-modal forms: first called TableChooser and allows to choose a table to operate, second form is invoked by TableChooser, it's also non-modal and it allows to perform actual table editting (has a grid and navigation bar in simplest case or more sophisticated form for tables with many fields).

This is the main program of this application if it can help:

********************************************************************
*  Description.......: Main program of TableMaintenance application
*  Calling Samples...:
*  Parameter List....: pcMode, pcDBC, pcTable, pcMethod, pcUpdateType, pcFilter, pcFieldList, pcValues
*  Created by........: Nadya Nosonovsky 03/14/2000 11:06:59 AM
*  Modified by.......: Nadya Nosonovsky 09/26/2000 11:31:26 AM
********************************************************************
* This application is called by job control or XForm, but it should also work
* as a standalone application.

* takes 5 optional parameters
parameters pcMode, pcDBC, pcTable, pcMethod, pcUpdateType, pcFilter, pcFieldList, pcValues
* pcMode:       Manual or Auto mode
*
* pcDBC:        Database containing the table
*
* pcTable:         File name of the table to be operated upon.
*
* pcMethod:         Auto-Update method (if any) to be invoked
*
* pcUpdateType: Add or Edit
*
* pcFilter:     Record identifier
*
* pcFieldList:  List of fields (separated by semicolon)
*
* pcValues:     List of values (separated by semicolon)

private pcFormName
pcFormName=''

if type('pcTable')<>'C' && pcTable was not specified
     pcTable=''
endif

if type('pcMode')<>'C' or empty(pcMode) && Mode was not specified correctly
     pcMode='Manual' && Set it to be Manual
else
    pcMode=proper(pcMode)      
endif

if type('pcDBC')<>'C' or empty(pcDBC) && DBC Name was not specified correctly
     pcDBC='Lookups' && Set it to be Lookups
else
    pcDBC=proper(pcDBC)     
endif

if type('pcMethod')<>'C' && Method for Auto Mode was not specified correctly
     pcMethod='Update Lookups' && Set it to be Update Lookups
else
   pcMethod=proper(pcMethod)     
endif

* Check environment
if not 'wgutility' $ lower(set('procedure'))
   set procedure to wgutility additive
endif   
if not 'wg' $ lower(set('classlib'))
   set classlib to wg, wgcontrols, wglookups  additive
endif   

do case
case pcMode='Manual'
     if empty(pcTable) && Table name was not specified
          do form TableChooser with pcDBC 
          if empty(pcTable) && User hits Close
               return .f.
          endif

     else && pcTable was specified

          use TableMaint again in 0 shared alias TableMaint
          if seek(upper(pcTable),'TableMaint','TableName')
               pcFormName=TableMaint.EditForm
          endif
          use in TableMaint && Close TableMaint
          if !empty(pcFormName)
               do form (pcFormName) && Modeless form
         else
             do form TableMaint && Generic modeless form     
        endif
     endif

case pcMode='Auto'
     if pcMethod='Update Streets'
        do UpdateStreets
     endif        
     if pcMethod='Update Phones'
        do UpdatePhones
     endif   
     if pcMethod='Update Lookups'
        do UpdateLookups
     endif   
     if pcMethod='Update Lenders'
        do UpdateLenders in UpdateLookups
     endif   
     if pcMethod='Update Towns'
        do UpdateTowns in UpdateLookups
     endif   
     if pcMethod='Update Filing'
        do UpdateFiling in UpdateLookups
     endif   

     if type('oJC')='O'
        oJC.CurAppStat='C' && Set Current status of application
     endif 
endcase

return               && end of main program - return to calling app or VFP command level