=include name
-=head1 SYNOPSYS
+=head1 SYNOPSIS
B<DEF:>I<E<lt>vnameE<gt>>=I<E<lt>rrdfileE<gt>>:I<E<lt>ds-nameE<gt>>:I<E<lt>CFE<gt>>[:step=I<E<lt>stepE<gt>>][:start=I<E<lt>timeE<gt>>][:end=I<E<lt>timeE<gt>>]
These three instructions collect the data out of the B<RRD> files,
optionally altering it (think of a bytes to bits conversion) and
if desired you can define variables containing useful information
-such as maximum, mininimum etcetera. Two of the instructions use
+such as maximum, minimum etcetera. Two of the instructions use
a language called B<RPN> which is described in its own manual page.
=head1 DEF
I<vname> can then be used throughout the rest of the script. By
default, an B<RRA> which contains the correct consolidated data
at an appropriate resolution will be chosen. The resolution can
-be overriden with the L<--step|rrdgraph/item_Time> option.
-The resolution can again be overriden by specifying the B<step size>.
+be overridden with the L<--step|rrdgraph/item_Time> option.
+The resolution can again be overridden by specifying the B<step size>.
The time span of this data is the same as for the graph by default,
you can override this by specifying B<start and end>. Remember to
escape colons in the time specification!