The Multi Column Description Format (mcd) associates labels to the columns of an [mcf](mcf) file. Each line of an mcd file describes a column of the mcf file.
The Multi Column Description Format (mcd) associates labels to the columns of an [mcf](mcf) file. Each line of an mcd file describes a column of the mcf file. Each line of an mcd file is made of four columns
* The first column indicates the column of the mcf that is being described
* The second column associates a label to the mcf column that is being described
