[groff] 01/01: Clarify meaning of .H and .V registers.

[G. Branden Robinson]

gbranden pushed a commit to branch master
in repository groff.

commit f79425056fafcf9db06bc4db6d6278dff315c4fd
Author: G. Branden Robinson <address@hidden>
Date:   Sun Nov 4 06:32:02 2018 -0500

    Clarify meaning of .H and .V registers.
    
        * doc/groff.texi: Clarify meaning of .[HV] registers.  Thanks to
        Dave Kemper for the patch.  Place the new language in the
        Measurements section, and slightly expand descriptions of .H
        and .V registers.
    
        * man/groff.7.man: Synchronize descriptions of .H and .V with
        foregoing.
    
        Fixes <https://savannah.gnu.org/bugs/index.php?54884>.
    
    Signed-off-by: G. Branden Robinson <address@hidden>
---
 doc/groff.texi  | 12 ++++++++++--
 man/groff.7.man |  4 ++--
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/doc/groff.texi b/doc/groff.texi
index 9677e34..0b7b2f7 100644
--- a/doc/groff.texi
+++ b/doc/groff.texi
@@ -5052,6 +5052,12 @@ fractional basic units are always rounded to integers.
 Some of the measurement units are completely independent of any of the
 current settings (e.g.@: type size) of @code{gtroff}.
 
+Although groff's basic unit is device-dependent, it may still be smaller
+than the smallest unit the device is capable of producing.  The register
address@hidden specifies how many groff basic units constitute the current
+device's basic unit horizontally, and the register @code{.V} specifies
+this value vertically.
+
 @table @code
 @item i
 @cindex inch unit (@code{i})
@@ -6479,7 +6485,8 @@ This string-valued register returns the current input 
file name.
 @cindex horizontal resolution register (@code{.H})
 @cindex resolution, horizontal, register (@code{.H})
 @vindex .H
-Horizontal resolution in basic units.
+Number of basic units per horizontal unit of output device resolution.
address@hidden
 
 @item \n[.R]
 @cindex number of registers register (@code{.R})
@@ -6502,7 +6509,8 @@ and to zero otherwise.  @xref{Groff Options}.
 @cindex vertical resolution register (@code{.V})
 @cindex resolution, vertical, register (@code{.V})
 @vindex .V
-Vertical resolution in basic units.
+Number of basic units per vertical unit of output device resolution.
address@hidden
 
 @item \n[seconds]
 @cindex seconds, current time (@code{seconds})
diff --git a/man/groff.7.man b/man/groff.7.man
index 6fd5969..f362d28 100644
--- a/man/groff.7.man
+++ b/man/groff.7.man
@@ -3860,7 +3860,7 @@ Text base-line high-water mark on current page or 
diversion.
 .
 .TPx
 .REG .H
-Available horizontal resolution in basic units.
+Number of basic units per horizontal unit of output device resolution.
 .
 .TPx
 .REG .height
@@ -4117,7 +4117,7 @@ Current vertical line spacing.
 .
 .TPx
 .REG .V
-Available vertical resolution in basic units.
+Number of basic units per vertical unit of output device resolution.
 .
 .TPx
 .REG .vpt