On my last few posts, I found that the "extra space" doesn't work.

I type: .[math ]D[/tex] and [math ]D+E[/tex]

. . and I get and . . (The first is smaller.)

Then I type: .[math ] D[/tex] and [math ]D+E[/tex]

. . (note the space before the D)

. . and I still get and

The solution is one I've been trying to avoid: .\large{D}

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I just completed some exhaustive experimenting

. . and found some "rules".

Upper-case letters

The combination: and .has different-sized A's.

The combination: and has same-sized L's.

The sizes are the same for: .

All the other upper-case letters appear in two sizes.

These can be corrected by the "extra space" trick

. .forexcept

Lower-case letters

The combination: and has different-sized a's.

The combination: and has same-sized e's.

The sizes are the same for and only.

All the other lower-case letters appear in two sizes.

These can be corrected by the "extra space" trick

. .forexcept

Why these exceptions? . . .I have no idea!

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It finally occured to me . . .

I just spent an inordinate amount of time on a most trivial matter:

. . a barely discernible difference in the size of fonts.

I must get a life . . .