Hi, I'm ConTeXting a text that follows: %%%%%%%%%%%%%%%%% \setupwhitespace[big] \setupinterlinespace[line=2.5ex] \starttext The Leslie Matrix is a matrix $L[1:X, 1:X]$ of the form $$\left( {\matrix{ {a_1 } & {a_2 } & {a_3 } & \ldots & {a_X } \cr {b_1 } & 0 & 0 & 0 & 0 \cr 0 & {b_2 } & 0 & 0 & 0 \cr 0 & 0 & \ddots & 0 & 0 \cr 0 & 0 & 0 & {b_{X - 1} } & 0 \cr } } \right), $$ to build which we need to know $a_x$, {\em ability to reproduce}, an average number of offsprings within a time step from an individual of age class $x$, and $b_x$, {\em probability of surviving}, a fraction of individuals that survives from age class $x$ to age class $x+1$. \stoptext %%%%%%%%%%%% and a matrix has big spacing BEFORE and normal spacing AFTER. Interesting, but without two first setup lines, matrix glues to the subsequent text. Best, Vaytcheslav