Section on spacings

[behnam]

From a typographical point-of-view, we need to answer the following questions:

• How much is inter-word spacing and how it relates to justification (to be useful for type designers, mostly),
• What kinds of intra-word spaces (ZWNJ and narrow spaces) are used and how?
• How's spacing around and between numerals (maybe also include number/date-ranges and phone-number issues with bidi levels),
• How much is the spacing around punctuation marks, specially for parenthesis, period, comma, colon, semicolon, question ad exclamation marks, dashes, etc.
  • One important question here is whether there should be more space after (on the left-hand-side of) period comparing to comma/colon/semicolon, or not?

[behnam]

We have two sections in the document related to this:

• https://w3c.github.io/alreq/#h_letterspacing
• https://w3c.github.io/alreq/#h_letterhighlights