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I am looking the the TeX logo macro in std-markup.ts.  I want to play around 
with it.  I Noticed that the actual definition of the TeX Logo with things 
like the <space|> primitive, move, resize etc is hidden by default.

This must be caused by the <active*|> keyword.  Although this primitive is 
undocumented, I can guess that it has to do with activating its argument.  
Can someone please tell me what the difference is between active and active*?

I tried to remove the active* word by moving my cursor right before the the 
"macro" word and right before the "TeX" logo itself and tried to do a 
Source->Activation->Disactivate, but to my surprise the Disactive option was 
disabled.

The only way I can remove the "activeness" is to edit the style file using my 
standard emacs editor.  How do I disactivate the macro within TeXmacs?


The <space|>  primitive takes -0.4spc.  How many picas or points is 1 spc 
unit?

There are other units like 0.5fn.  What does fn stand for?

It also says <with|math-level|0|E>  Can I have some explanation of the 
math-level variable?

Salman