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Text preceding the characters of a family- Tb

- Instruction: Tb"%"

- Parameter: "%" a text

- Return: true if the text preceding the sequence of characters of the same family is "%".

- Description:

Returns true if the text preceding the character family where the index is located is the one specified. Character family means characters belonging to the family of letters, numbers, punctuation, spaces or other characters. The character family is established using the first character of the code text string.

- Examples

Text string: a

Braille string: 456

Condition: Tb "12"

Description: Returns true if the text "12" is present before the letter "a" and all other letters that precede it. For example in the word "12boat" the two "a" are transcribed with the cell "456".

Text string: 5

Braille string: 26

Condition: Tb "biblos

Description: Returns true if the text "biblos" is present before the number "5" and all other numbers that precede it. For example, if the text "biblos12345" is present, the number "5" is transcribed with cell "26".