Can a non-REQL command/executable be run in a REQL Script?

Problem:

is there syntax of the REQL command to execute a "non-REQL" command/executable outside of the REQL Script?

Resolution:

Here is the syntax of the REQL command to execute a "non-REQL" command/executable outside of the REQL Script:

run on of the following commands:

(0|1) execute(string [[,(0|1|2),iWaitSeconds], iMinimized])

(0|1) executeIndirect(string)

0: no waiting; 1: wait for interaction from user; 2: wait for number of seconds indicated in iWaitSeconds