补丁 (8/16/2008)
补丁增加了两项功能：
A. 版本号查验。
使用方法：Ctrl+Alt+V
B. SimpErhu乐谱在计算上自动全屏幕演奏提示新功能。
使用方法：
打开要练习或演奏的乐谱按F7键即可
注意事项：谱子要有节拍机符号和终止线。
4.3至4.5升级更新内容 (5/4/2008)
1.音符字体被整型，符号位置被调整
2.增加了 Ctrl+R/B 指令以便字符位置认定
3.增加了 Ctrl+空格 指令以便进行音符串的自动选择
4.改良了倚音输入法
5.将向下八度转换重新定义为 Ctrl+F
6.将消除弓指法指令重新定义为 Ctrl+K
7.改良了双音字符的设计，新增了位置调整的功能
8.增加了更多的节拍符号，自由节拍机数字输入法，行首符号， 和更多的空格宽度
9.改善了转调功能，增加了 Ctrl+T 指令
10.更新了使用说明书在内的所有帮助文件
11.改正了若干程序上的错误：
Ctrl+z （加线）的死循环；Ctrl+s （加连音线）的乱码；等等。
SimpErhu 软件包内容：
(1) 先看本文.txt
(2) SimpErhu_使用许可协约.txt
(3) SimpErhu.ttf 字体文件
(4) SimpErhu.dot 文本插件
(5) SimpErhu_使用说明书.doc
(6) SimpErhu_字符码表.doc
(7) SimpErhu_快捷键一览表.doc
(8) SimpErhu_特殊字符说明.doc
(9) SimpErhu_调式关系.doc
(10)SimpErhu_样谱_小花鼓.doc
Whats New For Version 4.5:
1.Changed font style and height, adjusted accent positions.
2.Added Ctrl+R to toggle character color to red while moving to the left, for easy identification of the clumped together symbols.
3.Added Ctrl+Spacebar to automatically select just entered 1/4 note string for fast action edit.
4.Reprogrammed Grace notes elevation routine to simplify operation and corrected minor bugs in codes. Adjusted accidentals Grace positions to eliminate the need of inserting spaces before grace notes.
5.Redefined Octave_down to Ctrl+F from Ctrl+Shift+D (some people find three finger operation difficult).
6.Changed articulation removal command key assignment from Ctrl+N to Ctrl+K.
7.Redesigned double tone notes, allowed minor movement of characters (3 positions).
8.Added more timing signatures, flexible metronome bmp numbers, more spaces, and line head characters.
9.Improved transposition codes and eliminated known bugs, added Ctrl+T (fixed-Do to Movable-Do) command.
10.Updated all help files
11.Corrected identified bugs
SimpErhu Package Content:
(1) Read_Me_First.txt
(2) SimpErhu_license_agreement.txt
(3) SimpErhu.ttf
(4) SimpErhu.dot
(5) SimpErhu_User_Guide.doc
(6) SimpErhu_Font_Map.doc
(7) SimpErhu_Command_ Keys.doc
(8) SimpErhu_Erhu_Symbols.doc
(9) SimpErhu_Transposition_Reference.doc
(10) SimpErhu_Score_Example.doc