User exit u0191 sets system execution lock number 9. If the lock takes place successfully, the next physical line of the Proc is skipped. When it does not lock successfully, the line immediately following the user exit is performed.
User exit u0195 saves an active list. The address of the currently active lists, the pointer to the next item to be accessed from the list, and the base/modulo of the file are saved in a special workspace. Once the list has been saved, it may be accessed via the u1195 user exit.
User exit u1191 releases previously-locked execution lock number 9. This lock typically would have been set by a call to user exit u0191. If the execution lock was locked by some other port number, then it will not be unlocked.
User exit u11a2 pads the current input buffer with enough leading zeros to make the value in the number of digits a specific number of digits wide, and returns the resulting string to the secondary input buffer.
User exit u21ad retrieves all values of an attribute from an item in a file, but does not advance the MultiValue counter. The following line of the Proc specifies the file information, and a code number.
User exit u3191 releases an execution lock if it was locked by the current port. This user exit performs the same function as the u1191 user exit with the exception that no error path is taken if execute lock is locked by another process.
User exit u4193 disables output to the Spooler, and redirects output to the terminal. Called from PROC, this performs the exact same process as printer close in FlashBASIC. Its function is to close the currently open print job and direct subsequent output to the terminal.
User exit u61a2 toggles a system-level flag that controls visible output to the users terminal. When terminal output is suppressed, this is equivalent to the ph PROC command. The reverse of this operation would be the u3193 user exit that sets terminal output on regardless of its current setting.