Method insertAtCharPos

Inserts a node at the given character position. @param charpos the character position to insert at @param siblings the NodeList to insert the node into @param domcn the child number to insert the node as @param ins the node to insert @param parent the node to become the parent of the ins

(final int charpos, final NodeList siblings,
            final int domcn, final Node ins, final Node parent, 
            final Document doc)