Since the stack is not a common concept on a PC (as it is on VM/CMS) and it is common in Xedit to do something like:
push some command
equivalent behavior could be provided with a DEFER command, like this:
defer some command
For maximum flexibility a QUERY/EXTRACT should be provided as well as a CLEAR. Additional flexibility could be provided with a PRIORITY value (like the RED editor had on VM).
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