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Checks if text matches a mask pattern for text-input, which will only allow certain characters in pre-defined slots.

Example

mask ("(100) 000-0000") {
    guide (true)
    placeholder-char ("#")
}

The following list defines the symbols used in the mask parameter:

• 0 - Number [0-9]
• 1 - Number [1-9]
• a - Letter
• A - Letter, forced to upper case when entered
• * - Alphanumeric
• # - Alphanumeric, forced to upper case when entered

The following are examples of symbols:

• ‘(100) 000-0000’ for US phone number.
• ‘A0A 0A0’ for Canadian zip code.