工具栏要有上缩按钮和上缩快速键

Suggestions
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Imported from UserVoice

Author: You Yuanfang

original title: “工具栏要有上缩按钮和上缩快速键”

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Please clarify your suggestion: what suggestion button should do specifically?

请说明您的建议：具体来说，“建议”按钮应该实现什么功能？