1. The case of റ്റ is similar to ള്ള in the document. A font that does not stack the റ + ് + റ can render it in horizontal format. So a word like മീറററ് can be spoofed by applying virama to the last two റ. It is rare to see a font that does not stack റ്റ, but instead of depending on that week assumption, better add a WLE rule similar to ള്ള. (This is also mentioned in Appendix part of the document as community feedback- That feedback was from me.) 2. The document should NOT be conflicting with nta as explained in Unicode version 11, Chapter 12. In the table under 6.1, 1a, 1b, 1c - all three should be allowed as variants and should not block any of them. Currently 1b is blocked. 1b is mentioned in Unicode Chapter 12. So it should be allowed. There is a debate going on whether that is a correct sequence or not in Unicode, it may or may not be corrected. As it exists in Chapter 12, it should be treated as variant. -- Santhosh Thottingal | സന്തോഷ് തോട്ടിങ്ങൽ Typeface designer and Language computing professional, Senior Software Engineer at Wikimedia Foundation Language Engineering thottingal.in | smc.org.in