Vgs
Visual transformation that formats input against a fixed character mask.
Each # in mask is a placeholder for one input character; any other character (space, slash, dash, …) is rendered as-is. For example "#### #### #### ####" shows card-number input grouped into four blocks.
The mask is purely visual — the value submitted to VGS is the raw, unformatted text.
Parameters
mask
display pattern; use # for input characters and any other character as a literal.