--- a/man/man1/ltview.1	Tue Apr 08 22:56:10 2014 +0100
+++ b/man/man1/ltview.1	Tue Apr 08 22:56:34 2014 +0100
@@ -1,13 +1,13 @@
 .\" 
-.TH "LTVIEW" "1" "11/03/14" "RADIANCE" ""
+.TH "LTVIEW" "1" "08/04/14" "RADIANCE" ""
 .SH "NAME"
-ltview \- view a light source
+ltview \- view photometry of a light source
 .SH "SYNOPSIS"
 .B ltview
 [
 .B \-i
 ][
-.B "\-r roomsize"
+.B "\-b boxsize"
 ][
 .B "\-o output device"
 ]
@@ -41,7 +41,9 @@
 .I ltview
 relies on Radiance's
 .I rad(1)
-command to compile an octree and to call
+command to compile an octree using 
+.I oconv(1)
+and to call
 .I rvu(1)
 to display an interactive preview of the luminaire.
 The default behaviour for
@@ -50,7 +52,7 @@
 .I ies2rad(1)
 so that the largest dimension of the fitting is unity, centered at the origin.
 This scaled representation of the original fitting is then placed inside a 
-square box 10 units in size.  The \-y face of the box is left open so that 
+square box 10 units in length.  The \-y face of the box is left open so that 
 the camera can look inside, facing +y.
 If it is desirable to keep the original luminaire in both its original size,
 and its original location, the
@@ -91,7 +93,7 @@
 .IP "" .2i
 ltview \-o qt ABC123.ies
 .PP 
-To look at a typical T5 fluorescent fitting that is modelled in millimeters
+To look at a typical fluorescent fitting that is modelled in millimeters
 .IP "" .2i
 ltview \-r 5000 XYZ_batten.rad
 .SH "AUTHOR"