<html><head></head><body><div style="font-family: Verdana;font-size: 12.0px;"><div>In math mode, material in an hbox is formatted in horizontal mode. I don't see the necessity of assigning to \textfont1. If you just want to use these characters once in a while, you can pick a size and use hboxes. You could define a family, but I don't think it's meant to work that way. You want to use individual characters from this font with the normal family. Since you can put the hboxes into macro definitions, I think this solution would be adequate. If you're only using a few bold Greek letters, it doesn't seem like it would be worth it to me to define \textfont, \scriptfont and \scriptscriptfont. However, it would certainly be possible. I'm not sure how switching families in the middle of an equation would work, since I've never tried to do this. I think it would inadvisable.</div>
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<div style="margin:0 0 10px 0;"><b>Gesendet:</b> Sonntag, 27. August 2023 um 11:41 Uhr<br/>
<b>Von:</b> "Gérald Tenenbaum" <gerald.tenenbaum@univ-lorraine.fr><br/>
<b>An:</b> "Philip Taylor (Hellenic Institute)" <P.Taylor@Hellenic-Institute.Uk><br/>
<b>Cc:</b> "Eplain" <tex-eplain@tug.org><br/>
<b>Betreff:</b> Re: [tex-eplain] boldface greek symbols</div>
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<div style="font-size: 12.0px;font-family: Lucida Sans;">Thanks.<br/>
Yes it suffices, but I also need these boldface letters in subscripts.<br/>
I am puzzled by the necessity of using \hbox. Can't one design a setting working like \bf or \it ?<br/>
Regards,<br/>
<br/>
Gérald<br/>
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<span>Philip Taylor (Hellenic Institute) a écrit le 27/8/23 à 11:21 :</span>
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<div class="moz-cite-prefix">You don't appear to be using <tt><font size="+1">\gpfam</font></tt>, Gérald — will not the following suffice ?</div>
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<tt>\font \tengp = cmmib10</tt><br/>
<tt>\def \gp {\textfont 1 = \tengp}</tt><br/>
<tt>\def \gth {\hbox {$\gp \vartheta $}}</tt><br/>
<tt>$\gth \neq \vartheta $</tt><br/>
<tt>\end</tt></p>
<p>--<br/>
<i>Philip Taylor</i></p>
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