# Userexits

Functions

## dde File Reference

### Functions
int | dde_cal ()
| Sends data to an application over a communication channel.
int | dde_com ()
| Starts a client application in asynchronous mode.
int | dde_com_wai ()
| Starts a client application in synchronous mode.
int | dde_opn ()
| Opens a communication channel to a client application.
int | dde_put ()
| Sends data to the specified client application.

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