\fBrounded\fR (border with rounded edges, default), \fBsharp\fR (border with
sharp edges), or \fBnoborder\fR (no border).
* \fB+SCROLL[-OFFSET]\fR determines the initial scroll offset of the preview
window. \fBSCROLL\fR can be either a numeric integer or a single-field index
expression that refers to a numeric integer. The optional \fB-OFFSET\fR part is
for adjusting the base offset so that you can see the text above it. It should
be given as a numeric integer (\fB-INTEGER\fR), or as a denominator form
(\fB-/INTEGER\fR) for specifying a fraction of the preview window height.
* \fB[:+SCROLL[OFFSETS][/DENOM]]\fR determines the initial scroll offset of the
preview window.
- \fBSCROLL\fR can be either a numeric integer or a single-field index expression that refers to a numeric integer.
- The optional \fBOFFSETS\fR part is for adjusting the base offset. It should be given as a series of signed integers (\fB-INTEGER\fR or \fB+INTEGER\fR).
- The final \fB/DENOM\fR part is for specifying a fraction of the preview window height.
* \fB~HEADER_LINES\fR keeps the top N lines as the fixed header so that they
are always visible.
@ -501,16 +503,23 @@ e.g.
# Initial scroll offset is set to the line number of each line of