Sharp EL-9900 - Manual (Page 66)

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Chapter 4: Basic Graphing Features — Basic Keyboard
E TRIG
1 sin X Use this when the equation contains a sine function.
2 cos X Use this when the equation contains a cosine function.
3 tan X Use this when the equation contains a tangent func-
tion.
F STO
Under this menu item there is one tool that enables the storing of
graph window settings.
1 StoWin By selecting this sub-menu item, the current graph
window setup will be stored.
Note: The actual graph image will not be stored with this tool.
G RCL
Under this menu item there are two tools that enable the recalling
of the previous graph window setup:
1 RclWin On selecting this sub-menu item, the previously stored
window setup will be recalled, and the graph will be
redrawn accordingly. If no window setup has been
stored previously, the default graph window setup will
be used.
2 PreWin On selecting this sub-menu item, the window setup
prior to the current zoom setup will be recalled, and the
graph will be redrawn accordingly.