Hit "S" to generate the command line prompt.
In the box make sure it's generating a spice command not a comment. Type .include ((filename.txt)) and place that anywhere on the "paper". It'll run when you hit run.
Well the both of you
( Dogears & etheory ) definitely made that easier than the help file to grasp , but I'm still getting a error , after I add the .include command using the Spice directive option . I save changes then choose run under the simulate menu and it tells me it cannot load the models.txt file. I have tried saving changes then relaunch the Spice app to make sure changes have been applied. The first error log file with the profile errors does not appear anymore, so this is a move in the right direction (error log screen snapshot in earlier post on pg. 42 ) . However , I'm puzzled with this new error - see screen snapshot below.
Note : running the x64 bit version of LTSpice XVII under W10 Pro v1909, OS build 18363.900
The models.txt file is in the same folder as the TG1 .asc file.

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LTSpice does'nt seem to recognize my models.txt file below , saved as .txt doc file
There are two choices of text file options to save as :
1) document text or
2) MS-DOS Text I assume both are the same

See my file below - snapshot of last half not fully displayed but included in the modesl.txt file.
