Additional settings / "Visual" タブ ([Setup] メニュー)

Window Opacity / Active
Window Opacity / Inactive
You can set up the value of opacity when the window is active (on focus) and not active (non-focus). The range of opacity is from 0 to 255. The more reduces the this value, the more window transparency is blinding.
Eterm lookfeel
Tera Term window looks like Eterm look-feel background transparency.
NOTICE: You need to save setup and restart Tera Term for enabling this settings.
Mixed ThemeFile to Background
When the Eterm look-feel feature is enabled, you can specify whether to mix the wallpaper and the image of theme file.
However, this option can not be used with Background Image at the same time.
Background Image
When the Eterm look-feel feature is enabled, an image file can be specified as background.
Image Brightness
When the Eterm look-feel feature is enabled, the brightness of an image file can be specified. The range of value is from 0 to 255.
The more brightness reduces the value, the more image brightens.

See also Background transparency.

MouseCursor
Mouse cursor can have one of the 4 shapes listed below:
ARROW = standard arrow cursor
IBEAM = ibeam cursor(default)
CROSS = cross cursor
HAND  = hand cursor
Font quality
Specifies the font quality. This feature will work well only if the operating system supports.
Default         = Dependent on OS configuration(Smooth edges of screen fonts).
Non-Antialiased = Disable the anti-aliasing.
Antialiased     = Enable the anti-aliasing.
ClearType       = Use the ClearType.
ANSI color
Specifies the RGB value of the color for PC style and aixterm style 16 colors mode.
Enable Bold attribute color
Enable Blink attribute color
Enable Reverse attribute color
Enable URL attribute color
Enable ANSI color
Enables each color attributes and color setting.
If ANSI color is disabled, 16 colors and 256 colors modes are also disabled.
Underline URL string
Enables Underline attribute on URL string.
FastSizeMove
"Eterm風にする"にチェックを入れたとき有効
ウィンドウのサイズの変更、移動、Zオーダーの変更途中に ウィンドウ内部の描画を省略して、処理を高速にします。
FlickerLessMove
"Eterm風にする"にチェックを入れたとき有効
ウィンドウメッセージ WM_WINDOWPOSCHANGING で WINDOWPOS 構造体(lParam)の flags に SWP_NOCOPYBITS をセットします。