Added explanatory string.

TODO.md

@@ -1,6 +1,6 @@
 Author: Shiro Takeda
 Maintainer: Shiro Takeda
-Time-stamp: <2017-08-06 12:52:27 st>
+Time-stamp: <2018-03-29 14:26:36 st>
 ------------------------------------------------------------
 
 * A list of TODO for GAMS mode.
@@ -11,82 +11,6 @@ Time-stamp: <2017-08-06 12:52:27 st>
 
 ** TODO A command that converts equations to LaTeX format.
 
-** TODO import されるファイル、export されたファイルのリストを作成する機能．
-
-
-* List of variables
-
-+ gams-align-default-spacing
-+ gams-always-popup-process-buffer
-+ gams-close-double-quotation-always
-+ gams-close-paren-always
-+ gams-close-single-quotation-always
-+ gams-comment-column
-+ gams-cycle-level-faces
-+ gams-default-pop-window-height
-+ gams-display-small-logo
-+ gams-docs-directory
-+ gams-docs-view-program
-+ gams-dollar-control-name
-+ gams-dollar-control-upcase
-+ gams-eolcom-symbol-default
-+ gams-file-extension
-+ gams-fill-column
-+ gams-font-lock-level
-+ gams-gamslib-command
-+ gams-indent-equation-on
-+ gams-indent-more-indent
-+ gams-indent-number
-+ gams-indent-number-equation
-+ gams-indent-number-loop
-+ gams-indent-number-mpsge
-+ gams-indent-on
-+ gams-inlinecom-symbol-end-default
-+ gams-inlinecom-symbol-start-default
-+ gams-insert-dollar-control-on
-+ gams-log-file-extension
-+ gams-lst-dir-default
-+ gams-lst-font-lock-level
-+ gams-lst-mode-hook
-+ gams-lxi-command-name
-+ gams-lxi-extension
-+ gams-lxi-import-command-name
-+ gams-lxi-width
-+ gams-mode-hook
-+ gams-multi-process
-+ gams-n-level-faces
-+ gams-ol-display-style
-+ gams-ol-font-lock-level
-+ gams-ol-height
-+ gams-ol-height-two
-+ gams-ol-item-name-width
-+ gams-ol-view-item
-+ gams-ol-width
-+ gams-outline-regexp
-+ gams-outline-regexp-font-lock
-+ gams-process-log-to-file
-+ gams-recenter-font-lock
-+ gams-save-template-change
-+ gams-sid-position-symbol
-+ gams-sid-tree-buffer-width
-+ gams-sil-display-style
-+ gams-sil-expand-batinclude
-+ gams-sil-expand-file-more
-+ gams-sil-follow-mode
-+ gams-sil-window-height
-+ gams-sil-window-width
-+ gams-special-comment-symbol
-+ gams-statement-file
-+ gams-statement-name
-+ gams-statement-upcase
-+ gams-system-directory
-+ gams-template-cont-color
-+ gams-template-file
-+ gams-template-mark
-+ gams-use-mpsge
-+ gams-user-comment
-+ gams:process-command-name
-+ gams:process-command-option