Greetings,
There is a file called 「...\SMath Studio\entries\Units.xml」
To get this unit to 'work', navigate to this bit of the XML file (I formatted the following to read easy):
<add factor="2*π" system="All" id="454"><!-- id='454' : Revolution -->
<synonym name="rev" lang:dan="omgange" lang:ger="U" />
</add>
to make it a 「English」 option, enter an alias to rev (i.e., hit the [spacebar] and type 「U」):Reopen SMath, and the unit will now be supported in Default.
May this be of Good Help;
⚜ Kenny Lemens, P.E. ᵂᴵ
"No matter where you go, there you are." -Buckaroo BanzaiHotkeys: https://en.smath.com/forum/resource.ashx?a=45771&b=2