{PreviousPost} and {NextPost} do not work on Tumblr

Question

It appears that {PreviousPost} and {NextPost} are not working on Tumblr to create custom themes. Here is my code. Can someone point out my mistake ...

<div> {block:PreviousPost}<a href="{PreviousPost}"><span>Previous Post</span></a>{/block:PreviousPost} {block:NextPost}<a href="{NextPost}"><span>Next Post</span></a>{/block:NextPost} </div> 

Answer 1

You need to wrap it in blocks {block:PermalinkPagination}…{/block:PermalinkPagination} , for example:

 {block:PermalinkPagination} {block:PreviousPost} <a rel="prev" href="{PreviousPost}">{lang:Previous Post}</a> {/block:PreviousPost} {block:NextPost} <a rel="next" href="{NextPost}">{lang:Next Post}<a/> {/block:NextPost} {/block:PermalinkPagination}