column            501 src/dps8/dps8_crdrdr.c   word12 column[CARD_COL_COUNT];
column            516 src/dps8/dps8_crdrdr.c         card->column[col] = 0;
column            527 src/dps8/dps8_crdrdr.c         card->column[col] |= (nibble << nibble_offset);
column            823 src/dps8/dps8_crdrdr.c             putbits36_12 (& buffer [wordno], fieldno * 12, (word12) card.column [col]);