Changes
at least then let's get Edit and History next to each other as custom; .plainlinks was pointlessly duplicated; newlines for clearer code; Help:Variable: Don't use PAGENAMEE in fullurl
<div class="plainlinks template-documentation"><div style="padding-bottom:3px; border-bottom:1px solid #aaa; margin-bottom:1ex;"><span class="editsectionplainlinks">[[[{{{1|{{SUBJECTPAGENAME}}/doc}}}|view]]] [[{{fullurl:{{{1|{{SUBJECTPAGENAMEESUBJECTPAGENAME}}/doc}}}|action=edit{{#ifexist: {{{1|{{SUBJECTSPACE}}:{{SUBJECTPAGENAMEESUBJECTPAGENAME}}/doc}}} ||&preload=Template:Documentation/preload}}}} edit]][[{{fullurl:{{{1|{{SUBJECTPAGENAME}}/doc}}}|action=history}} history]]</span> <span style="font-size: 150%">Documentation</span></div>
<div id="template_doc_page_transcluded" class="dablink plainlinks">This [[Wikipedia:Template documentation|documentation]] is [[Wikipedia:Transclusion|transcluded]] from [[{{{1|{{FULLPAGENAME}}/doc}}}]] ''([{{fullurl:{{{1|{{SUBJECTPAGENAME}}/doc}}}|action=history}} history])''.{{#ifexist: {{#rel2abs: /sandbox }}| {{#ifexist: {{#rel2abs: /testcases}}| <br> This template has a [[/sandbox|sandbox]] ''([{{fullurl:{{FULLPAGENAME}}/sandbox|action=edit}} edit])'' and [[/testcases|testcases]] for editors to experiment.}}<!-- else don't show when just 1 of /sandbox or /testcases exists -->}}</div>{{{{{1|{{SUBJECTPAGENAME}}/doc}}}}}<br style="clear:both;" /></div>