Total Commander

? as the first parameter causes a Dialog box to be displayed before starting the program, containing the following parameters. You can change the parameters before starting the program. You can even prevent the program's execution.

i suggest a kind of placeholder value for the dialog box.
with that placeholder you wouldn't have the whole paramater string in the dialog box - just the placeholder part.

for example:
only "Insert document name" would be shown in the dialog box, already marked for replacement/overwrite by the user (basically the fallback/default value)

ps: and maybe some "Y M D h m s" params, so that you don't have to use "%date:~6,4%-%date:~3,2%-%date:~0,2%" or stuff like that

Support for something like this - I guess the placeholder marks could be something like %?....%?

Like: