Minor doc update.

1 files changed, 7 insertions, 1 deletions

diff --git a/doc/index.txt b/doc/index.txt
index 2e80281..7c1942e 100644
--- a/doc/index.txt
+++ b/doc/index.txt
@@ -228,6 +228,12 @@ assigned to the relevant CPU or task. Alteratively, select one of the task or CP
 in the upper-left portion of the graph. Then navigate to `Edit->Colors` and use the color chooser
 to pick the desired color.
 
+#### Saving ####
+
+So far, the only method of saving a trace graph is to output the graph to a PNG or SVG file.
+Choose `File->Save Graph to File` for this option. Note that saving to SVG (vector graphics)
+can take quite a long time, because a graph can be composed of a large number of primitives.
+
 #### Exiting ####
 
 To exit the Unit-Trace visualizer, go to `File->Quit` or click the close button.
@@ -245,7 +251,7 @@ Currently, some output modules assume time is in nanoseconds; they convert it in
 This behavior may have to be modified in the future if non-nanosecond trace files are used.
 
 However, when specifying time intervals in certain situations for output modules,
-you can specify the units, the default being milliseconds (see the information for the `-v` option).
+you can specify the units, the default being milliseconds (see the information for the `-t` option).
 
 ## Known Bugs ##