Previous index merged- Ia

- Instruction: Ia

- Parameter: none

- Return: true if the previous word has been merged using the "Iu" or "Ij" instruction

- Description:

Returns true if in the previous code the index has been merged (Iu or Ij instruction). This is a boolean instruction that does not change the index.

- Examples:

Text string: a

Braille string: 456

Condition: Ia

Description: If the previous transcription code generated a union of words, the letter "a" is transcribed with the cell "456".