Date: Monday, 6 October 1986 19:19:28 EDT
From: Harry.Bovik@k.cs.cmu.edu
To: bovik@k.cs.cmu.edu
Subject: Angstrom unit marker
Message-ID: <1986.10.6.23.18.12.Harry.Bovik@k.cs.cmu.edu>


08-Jul-86 19:47    Hungry Like A Wolf           Angstrom signs
From: Hungry Like A Wolf <PRASAD@C.CS.CMU.EDU>
Is there an easy way to get angstrom signs ?  The scribe manual has
nothing on this.  I want to print on the dover. Thanks.

Prasad@C.CS.CMU.EDU  X3880

09-Jul-86 11:06    Oswald Wyler@A.CS.CMU.EDU    Angstrom sign
Of course, I should have an Umlaut there, but that's too messy.
Anyhow, to get a good degree sign, use @up(...), where the three
dots stand for the control character ^E in the Dover font CMSY8s8
(for 10 point fontfamilies) or CMSY9s9 (for 12 point fontfamilies).
If you want the degree sign over the letter A, more tinkering is
needed.  The following commandstring should work.
@commandstring[Ang "@begin(matharea,spacing 0inch,centered,scriptpush off)
@begin(transparent,script +1em)...@end(transparent)
A@markbaseline
@end(matharea)"]
The ... stand again for the character described above.  The assumption
is that you are not in a Math or Mathdisplay environment; otherwise
the "A" should be @r(A).  I have used similar constructions, but I have
not checked the correct height in the second line of the command string.
This may need adjustment.                       Oswald Wyler


10-Jul-86 10:43    Oswald Wyler@A.CS.CMU.EDU    Angstroem corrected
This one is guaranteed to work:
@define(arrowarea,matharea,spacing 0inch,centered,scriptpush off)
@specialfont(f9 "cmsy8s8")
@commandstring[Ang "@begin(arrowarea)
@begin(transparent,script +1em)@f9()@end(transparent)
A@markbaseline
@end(arrowarea)"]
 
Comments.  (1) I forgot yesterday that "matharea" is an attribute, not
an environment.  Also, I find the "arrowarea" environment defined above
useful for long arrows with letters over them, and a lot of other stuff.
(2) The little circle exists in facecode X of the Helvetica10 fontfamily,
but only in full size which is to big.  I still cannot understand why
Unilogic foists a symbol facecode on us which does not allow for sub-
and superscripts.  (3) In case it does not show up on your terminal:
the character called for in @f9 is ^E.  (4) In the near future, @Ang
will be in my MyMath package.                   Oswald Wyler
P.S. If the circle is too big for your taste, use cmsy7s7.