The Topicbox shows the current topic on the channel, it can also be used to change the topic if you are a channel operator.
The Topicbox is by default non sticky, it expands into the necessary number of lines when you click it, and collapses into a single line when the focus is removed.
Sticky mode makes the Topicbox always show the necessary number of lines.
Sticky mode can be changed globally in Options -> Windows -> Topicbox and per channel by right-clicking the Topicbox and select Show Sticky or through the /topicbox command.
Clicking Set as default will change the global mode as ell.
The Topicbox can be disabled globally in Options -> Windows -> Topicbox and per channel by right-clicking the Topicbox and select Off or through the /topicbox command.
Clicking Set as default will change the global mode as ell.
To edit the channel topic from the Topicbox right-click the Topicbox and click Unlock, this puts the Topicbox in a edit mode and you can type/copy/paste and so on.
While editing the topic, the text will act as a real time preview when entering control codes.
Note, some networks/channels doesn't allow control codes in topics and will remove them.
Pressing CTRL + Space opens the Topicbox right-click menu.