What is U+0E46 THAI CHARACTER MAIYAMOK?

[James Kass via Unicode]

In the example, "ประดัก ๆ", there's a space character in the text,
which seems right.  There's no space between MAIYAMOK and the closing
quotation mark, which also seems right.  If a font included extra
spacing around MAIYAMOK, the display of something like...
THAI CHARACTER MAIYAMOK (ๆ)
...would be off, I'd think.

> ... when the Thai punctuation mark mai yamok (ไม้ยมก)
> is used with words, it is flanked by spaces, ...

Is there a contrasting use where this mark is not used with words?
Maybe numbers?