'\0' = nothing; the cursor does not visually move as they edit. Similar to Unix style password prompts.
'*' (or anything else really) = will replace all input characters with stars when displaying, obscure the specific characters, but still showing the number of characters and position of the cursor to the user.
Controls the input echo setting.
Possible values are:
dchar.init = normal; user can see their input.
'\0' = nothing; the cursor does not visually move as they edit. Similar to Unix style password prompts.
'*' (or anything else really) = will replace all input characters with stars when displaying, obscure the specific characters, but still showing the number of characters and position of the cursor to the user.