原文如下：

To control console and graphics visibility

Olex2 has a built in console for typing commands. Sometimes it is desirable to see only the text (output) or the structure. There are several commands and shortcuts to help with this. <Ctrl>+T toggles whether the molecule is displayed or not. So, if your molecule has inexplicably disappeared, it's always worth pressing this key combination...

The program output of Olex2 happens 'behind' the molecule. The wisdom of doing things this way can be debated, but it means that there are fewer windows cluttering your screen. It is possible to adjust the number of lines of output you see by typing:

>>lines n

(e.g.?lines 5) to see only 5 lines of the output a time, it may be confusing for procedures producing more that 5 lines (like calcvoid). If you want to see all lines, type:

>>lines -1

Alternatively, you can type 'text' in the console (or use corresponding GUI links) to view the text output in an external text editor. You can always use PgUp and PgDn keys to scroll the console output. There is a limited buffer to hold the console output, however a full transcript of the Olex2 session is available in the log file, which can be displayed using:

>>log

command.

譯文如下：

3.11. 控制操縱臺和圖形可見性

Olex2有一個用于鍵入指令的內(nèi)置控制臺。有時只希望看到文本(輸出)或結(jié)構(gòu)。有數(shù)個指令和快捷方式可以實現(xiàn)這一點。Ctrl+T切換顯示分子與否。因此，若你的分子莫名其妙地消失了，總是值得試試按下這個組合鍵……

Olex2的程序輸出顯示在分子'后面'。用這種方式做事是否明智值得商榷，但這意味著屏幕上亂七八糟的窗口少了。若要調(diào)整你所看到的輸出文本行數(shù)，你可以通過鍵入：

>>lines n

(例如lines 5)一次只能看到5行輸出內(nèi)容，對于產(chǎn)生超過5行的過程(如calcvoid)，如果你想查看所有行數(shù)，請鍵入：

>>linse -1

或者，你可以在控制臺鍵入'text'(或使用相應(yīng)的GUI鏈接)以在外部文本編輯器中查看文本輸出內(nèi)容。你可以始終使用PageUp和PageDown鍵用于上下滾動控制臺輸出內(nèi)容。有一個有限的緩沖區(qū)來保持控制臺輸出，但Olex2會話的完整副本保存于日志文件，該文件的顯示可以鍵入：

>>log

指令。

本文輔助視頻如下：

Olex2中背景文本行數(shù)的設(shè)置

https://www.bilibili.com/video/BV1Yk4y1k768

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