If it is a file listing all the other paint tools, just copy the lines making reference to the paintbrush and rewrite them so they act on the gradientbrush.
For more detailed information please see the pages on Transparent Activation in our online reference or in your offline copy of the reference documentation.
要获取更详细的信息请阅读在线参考文档或者你拷贝的离线参考文档中有关透明激活部分。
3
This is used to assign values to the templates by reference instead of making a copy. See the PHP manual on variable referencing for an explanation.