Some plots

Plot 1 does not use context:

Plot 2 doesn't use context either; has length 6:

Plot 3 has length 4:

Plot 4 shows that a new block with context does not see the variable defined in the no-context block:

Plot 5 defines a in a context block:

Plot 6 shows that a block with context sees the new variable. It also uses :nofigs::

Plot 7 uses a variable previously defined in previous nofigs context. It also closes any previous figures to create a fresh figure:

Plot 8 shows that a non-context block still doesn't have a:

Plot 9 has a context block, and does have a:

Plot 10 resets context, and a has gone again:

Plot 11 continues the context, we have the new value, but not the old:

Plot 12 opens a new figure. By default the directive will plot both the first and the second figure:

Plot 13 shows close-figs in action. close-figs closes all figures previous to this plot directive, so we get always plot the figure we create in the directive:

Plot 14 uses include-source:

Plot 15 uses an external file with the plot commands and a caption:

Plot 16 uses a specific function in a file with plot commands: