Methods for improving the internal bond strength of paperboard with greater than 25 percent crosslinked fiber in at least one ply are described. The present invention also provides contrast agents for imaging, comprising the new paramagnetic metal-phthalocyanine complexes. The base station transmits a second RRC message causing in the wireless device, modification of a cell group of a cell without explicitly releasing the cell. Voice commands can then be input to control play of the document audio file to pause, rewind, read paragraph, read next chapter, fast forward, etc.