chafa: Fix documentation for --relative

docs/chafa.xml

@@ -288,9 +288,9 @@ useful in low-color modes.
 <varlistentry>
 <term><option>--relative <replaceable>bool</replaceable></option></term>
 <listitem><para>
-Use relative cursor positioning [on, off]. When off, linefeeds will be used to
-advance the cursor vertically. Defaults to on, except when used with "-c none",
-where it defaults to off.
+Use relative cursor positioning [on, off]. When on, control sequences will be
+used to position images relative to the cursor. When off, newlines will be used
+to separate rows instead for e.g. 'less -R' interop. Defaults to off.
 </para></listitem>
 </varlistentry>
 

tools/chafa/chafa.c

@@ -477,10 +477,10 @@ print_summary (void)
     "                     altered state (rude).\n"
     "  -p, --preprocess=BOOL  Image preprocessing [on, off]. Defaults to on with 16\n"
     "                     colors or lower, off otherwise.\n"
-    "      --relative=BOOL  Use relative cursor positioning [on, off]. When off,\n"
-    "                     linefeeds will be used to advance the cursor vertically.\n"
-    "                     Defaults to on, except when used with \"-c none\", where\n"
-    "                     it defaults to off.\n"
+    "      --relative=BOOL  Use relative cursor positioning [on, off]. When on,\n"
+    "                     control sequences will be used to position images relative\n"
+    "                     to the cursor. When off, newlines will be used to separate\n"
+    "                     rows instead for e.g. 'less -R' interop. Defaults to off.\n"
     "      --scale=NUM    Scale image, respecting terminal's maximum dimensions. 1.0\n"
     "                     approximates original pixel dimensions. Specify \"max\" to\n"
     "                     use all available space. Defaults to 1.0 for pixel graphics\n"