\starttext

\startmixedcolumns[balance=yes] line 1 \column line 2 \par    line 3 \par    line 4 \par    line 5 \stopmixedcolumns \blank[2*line]
\startmixedcolumns[balance=yes] line 1 \par    line 2 \column line 3 \par    line 4 \par    line 5 \stopmixedcolumns \blank[2*line]
\startmixedcolumns[balance=yes] line 1 \par    line 2 \par    line 3 \column line 4 \par    line 5 \stopmixedcolumns \blank[2*line]
\startmixedcolumns[balance=yes] line 1 \par    line 2 \par    line 3 \par    line 4 \column line 5 \stopmixedcolumns \blank[2*line]
\startmixedcolumns[balance=yes] line 1 \par    line 2 \par    line 3 \par    line 4 \par    line 5 \stopmixedcolumns \blank[2*line]

\doactivateinjector{test} \showinjector

\setinjector[test][5][{\column}]
\setinjector[test][7][{\column}]

\startmixedcolumns[balance=yes]
    \dotestinjector{test}line 1 \par
    \dotestinjector{test}line 2 \par
    \dotestinjector{test}line 3 \par
    \dotestinjector{test}line 4 \par
    \dotestinjector{test}line 5
\stopmixedcolumns

\blank[2*line]

\startmixedcolumns[balance=yes]
    \dotestinjector{test}line 1 \par
    \dotestinjector{test}line 2 \par
    \dotestinjector{test}line 3 \par
    \dotestinjector{test}line 4 \par
    \dotestinjector{test}line 5
\stopmixedcolumns

\stoptext

