Somewhere on Typophile I read about adding dots (nuqta) to base glyph in VOLT.
This means instead of making glyphs for each combination of base glyph with dots in FontLab, you use VOLT to compose glyphs on the fly using a single base glyph.
This has something to do with CCMP feature.
I request anyone who has used this feature for the mentioned purpose to kindly share their experience.
Thanks and regards.