The totalcmd.inc file of the current version of TC 9 (alpha?) is included in TC 8.52. Unsurprisingly none of the commands work. An error message is displayed instead
cm_ButtonConfig2=583;Conf: Button bar 2 (vertical)
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CM_WAIT <time>=-12;Wait x milliseconds
SAVETABS <filename>=-13;Save tabs to .tab file on active side
SAVETABSL <filename>=-14;Save tabs to .tab file on left side
SAVETABSR <filename>=-15;Save tabs to .tab file on right side
SAVETABS2 <filename>=-16;Save tabs to .tab file on both sides (active=first)
SAVETABS2L <filename>=-17;Save tabs to .tab file on both sides (left=first)
SAVETABS2R <filename>=-18;Save tabs to .tab file on both sides (right=first)
I CONFIRM this plus OPENLANGUAGEFILE is now gone from the tc.inc
in the section [________Commands with parameters_________]=0
with no reason anywhere in history.txt
history.txt wrote:12.03.14 Added: New internal command OPENLANGUAGEFILE WCMD_xyz.LNG to open specific LNG/MNU file pair from "language" subdir. Leave out parameter for internal language. Will not be added to .inc (32/64)
Yes, I left OPENLANGUAGEFILE out from the inc so it didn't need translation. It could be a good idea to add it to TC 9, which will require quite a few new string translations.