How to disable Indic syllable form editing in MS word

[Richard Wordingham via Indic]

On Fri, 8 Dec 2017 06:06:28 +0530
Shriramana Sharma via Indic <indic at unicode.org> wrote:

> The only sane way to insert joiners is at initial input time. Else
> BkSp BkSp BkSp then joiner is the only option.

Are you seriously suggesting deleting most of the akshara?  Or are you
using a different key for the function of deleting the preceding
character?