Enable drag and drop for a page

[suto]

I would like to enable drag and drop in a page under my own portal.

I tried the following 2 approaches:

1. Go to the properties screen for my portal page and add a property called 'drag and drop' with value 'true'

Or

2. Go to the same place and add a property called 'theme.dyna.dnd_enabled' with value 'true'

Neither took effect.

I searched the past discussions and came across suggestion to update the '*-object.xml' file with the following. But which file do I modity for my own portal page?

<property>

     <name>theme.dyna.dnd_enabled</name>

     <value>true</value>

</property>