EditPlus displays content in a file with out word wrapping as the Word-wrap feature is disabled by default.
To apply word wrap for the current open document you can do the following.
Click on Document menu -> Select Word-wrap option
and the result is
This change in setting gets applied only to the current open document. If you want to apply Word-wrap feature permanently then you can do by making the following changes.
Click Tools -> Preferences -> Settings & syntax.
Click on the Word-wrap button and Enable word wrap by ticking the Check box. And click OK to apply the changes.