# Userexits

Functions

## app File Reference

### Functions
int | xapp_exc ()
| Starts an external application (by evaluating table T_APP_DAT).
int | xapp_prt_inf ()
| Shows information about the application that will be started when calling xapp_exc.
int | xapp_rea_fld ()
| This userexit can be used by LogiView to determine specific external application entries.
int | xapp_upd ()
| No-select menu userexit to update the cached information.

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