Plautus seems to have choreographed his plays somewhat true-to-life. To do this, he needed his characters to exit and enter to or from whatever area their social standing would befit. Two scholars, V. J. Rosivach and N. E. Andrews, have made interesting observations about stagecraft in Plautus: V. J. Rosivach writes about identifying the side of the stage with both social status and geography. He says that, for example, "the house of the medicus lies offstage to the right. It would be in the forum or thereabouts that one would expect to find a medicus." Moreover, he says that characters that oppose one another always have to exit in opposite directions. In a slightly different vein, N.E. Andrews discusses the spatial semantics of Plautus; she has observed that even the different spaces of the stage are thematically charged. She states: Plautus' Casina employs these conventional tragic correlations between male/outside and female/inside, but then inverts them in order to establish an even more complex relationship among genre, gender and dramatic space. In the Casina, the struggle for control between men and women... is articulated by characters' efforts to control stage movement into and out of the house. Andrews makes note of the fact that power struggle in the Casina is evident in the verbal comings and goings. The words of action and the way that they are said are important to stagecraft. The words denoting direction or action such as abeo ("I go off"), transeo ("I go over"), fores crepuerunt ("the doors creak"), or intus ("inside"), which signal any character's departure or entrance, are standard in the dialogue of Plautus' plays. These verbs of motion or phrases can be taken as Plautine stage directions since no overt stage directions are apparent. Often, though, in these interchanges of characters, there occurs the need to move on to the next act. Plautus then might use what is known as a "cover monologue". About this S.M. Goldberg notes that, "it marks the passage of time less by its length than by its direct and immediate address to the audience and by its switch from senarii in the dialogue to iambic septenarii. The resulting shift of mood distracts and distorts our sense of passing time." Relationship with the audience The small stages had a significant effect on the stagecraft of ancient Roman theater. Because of this limited space, there was also limited movement. Greek theater