([word=□] | □) □
([word=to] | □) □
([word=still] | □) □
As digital librarians attempt to fit their familiar practices to a new world , they may find the digital reference practices inadequate , frustrating , or difficult . With the guidance of MIT graduate student Mohammad Mahdian , he was able to prove several new results . " By creating algorithmically generated drawings , I hope to reveal the grace and balance that I see in mathematics , " Happersett says . Special features provide for user control : interactive maps allow visitors to zoom in and out , and pan left , right , up and down ; interactive artifacts permit visitors to turn the artifact around , seeing more of its detail ; a " magic lens " feature allows visitors to move a virtual lens over an historic manuscript to reveal a transcription ; and a zoom feature permits closer viewing of artifact detail . Was the game changed in some way to fit within the limitations of the chosen electronic format , leading to anomalies in the letter frequency ? Instead , Obama , an Illinois senator , called on Democrats to dash cynicism and embrace hope as the party continues its quest for the White House .