15.44  JOIN 

Joins the data points with a series of line segments.
JOIN [[LEVEL=]n] [{SPLINE|GENERAL}] [TEXT] [EXPAND[=ON|OFF]]
     [POINTS|COLUMNS=[FROM] n1 [TO] [n2]]
     [LINES|ROWS=[FROM] n1 [TO] [n2]]
     [SETS=[FROM] n1 [TO] [n2]]
     [SELECT="name"]
     [LIMITED [VLOG[=ON|OFF]] [[FROM]|TO [[X=]nx,[[Y=]ny[,[Z=]nz]]]
          [RECURSOR] [CURSOR] ]
     [SLICES [X|Y|Z] [FROM] v1 [[TO] v2]]
     [TITLE[=ON|OFF]]
     [CYCLE[=ON|OFF]]
     [INTENSITY|WIDTH=n]
     [WHITE|RED|GREEN|BLUE|YELLOW|MAGENTA|CYAN]
     [SOLID|DOTS|DASHES|DAASHES|DOTDASH|PATTERNED|FUNNY|SPACE]
     [HIDE[=ON|OFF]]
                         3-d options
               [X|Y|Z] [ERROR[=ON|OFF]]