Search the input context and replace it by the context that you input in the 'Replace with'. It will only replace on the active page.
Use Edit-Replace or CTRL+ H keys command to open the dialog box.
You can also add and use the Replace icon on your Toolbar.
When you have entered the input and replace info, click on OK to proceed replacement. You can then choose to replace all of the matches in one time (All) or replace it one by one by choosing Yes.
Tips
If you have any questions about this tutorial, mail it to findyours2@live.nl