Description: Explain what SWAP means in top
Bug-Debian: http://bugs.debian.org/217841
Author: Craig Small <csmall@debian.org>
--- a/top.1
+++ b/top.1
@@ -401,13 +401,13 @@
 o:\fB VIRT\fR \*(EM Virtual Image (kb)
 The total amount of \*(MV used by the task.
 It includes all code, data and shared libraries plus pages that have been
-swapped out.
-
-VIRT = SWAP + RES.
+swapped out and pages that have been mapped but not used.
 
 .TP 3
 p:\fB SWAP\fR \*(EM Swapped size (kb)
-The swapped out portion of a task's total \*(MV image.
+Memory that is not resident but is present in a task.  This is memory that
+has been swapped out but could include additional non-resident memory.
+This column is calculated by subtracting \*(MP from \*(MV.
 
 .TP 3
 q:\fB RES\fR \*(EM Resident size (kb)