Blockly:TEXT CHARAT TITLE/qqq

block text - Text for a block to extract a letter (or number, punctuation character, etc.) from a string, as shown below. %1 is added by the user and %2 is replaced by a dropdown of options, possibly followed by another user supplied string. TEXT_CHARAT_TAIL is then added to the end. See https://github.com/google/blockly/wiki/Text#extracting-a-single-character.