Blockly:TEXT CHARAT RANDOM/qqq
block text - Indicates that any letter (or number, punctuation mark, etc.) in the following piece of text should be randomly selected. See https://github.com/google/blockly/wiki/Text#extracting-a-single-character. 
block text - Indicates that any letter (or number, punctuation mark, etc.) in the following piece of text should be randomly selected. See https://github.com/google/blockly/wiki/Text#extracting-a-single-character.