I find the 1921 census records disappointing. Accuracy of transcription seems erratic at best. Original spelling of names is poor, relationships are a mess and transcription is even worse. “Statisticians (?)” have crossed over entries; there are check-marks, Xs and codes marked over original entries so as to make it illegible. Is there a decoder for all these codes which seem to be in mainly relationship & language columns. Too bad someone has basically defaced the original documents so as to make them almost useless. Also many families aren’t there (esp. in Montreal)–even if I search for strange spellings and relationships!