I need one wordpress plug-in that works as below.
1, To put an arbitrary code into a head tag that is sat down via cpanel.
2, If <!--more--> tag is exist in posts, an arbitrary tag that is sat down via cpanel will be inserted before <!--more--> tag automatically.
3, Specifies whether to insert a tag(2) for several days previous article via cpanel.
Please refer image files that attached.