1 files changed, 15 insertions, 7 deletions
diff --git a/Master/texmf/fonts/map/dvipdfm/dvipdfmx/cid-x.map b/Master/texmf/fonts/map/dvipdfm/dvipdfmx/cid-x.map
index db7ad5cdcc9..d2969113d7f 100644
--- a/Master/texmf/fonts/map/dvipdfm/dvipdfmx/cid-x.map
+++ b/Master/texmf/fonts/map/dvipdfm/dvipdfmx/cid-x.map
@@ -1,3 +1,6 @@
+%% This file 'cid-x.map' is read by dvipdfmx for default
+%% dvipdfmx.cfg setting.  Please append fontmap entries here.
+%%
 %% FONTMAP: CID-keyed font mapping file for dvipdfmx
 %% =================================================
 %%
@@ -6,7 +9,7 @@
 %% FORMAT
 %% ------
 %%
-%%  TFMNAME[@SFDNAME@] ENCNAME [:INDEX:][!]FONTNAME[/CSI][,VARIANT] [OPTIONS]
+%% TFMNAME[@SFDNAME@] ENCNAME|CMapNAME [:INDEX:][!]FONTNAME[/CSI][,VARIANT] [OPTIONS]
 %%
 %%
 %% DESCRIPTION
@@ -14,14 +17,19 @@
 %%
 %% 1) TFMNAME[@SFDNAME@]
 %%
-%%    TFM name is specified in the field TFMNAME without extension (.tfm),
-%%    and the subfont definition name in the field SFDNAME without
-%%    extension (.sfd). For example, jbtm@UKS@ specifies the TFM names,
-%%    jbtm01 - jbtm35, used in the CJK package.
+%%    TFMNAME is a name of TeX fonts in usual if no SFDNAME is attached.
+%%    Otherwise, TFMNAME is the basename of TeX fonts, for example,
+%%    cyberb@Unicode@ expands to cyberb00 -- cyberbff, where Unicode.sfd
+%%    contains subfont definitions with name from 00 to ff.
+%%    Moreover, both TFMNAME and SFDNAME do not contain file extensions.
 %%
-%% 2) ENCNAME
+%% 2) ENCNAME|CMapNAME
 %%
-%%    CMap resource name is specified in the field ENCNAME.
+%%    ENCNAME is the name of an 8-bit encoding file, e.g., 8r.enc.
+%%    CMapNAME is the name of a CMap file which is used as a 16-bit
+%%    encoding file. In particular, if UCS2 (2-byte Unicode) is used
+%%    as a 16-bit encoding, it suffices to set CMapNAME to unicode
+%%    even if no corresponding CMap file exists.
 %%
 %% 3) [:INDEX:][!]FONTNAME[/CSI][,VARIANT]
 %%