The hot keys in PC games are often overlooked by most users, however they can
help navigate an often intense interface of a game. These are the "Hot Keys" for 
RCT1. I hope they help :)

Key:	What it does:

0	Shows height marks on paths.
1	Shows Underground View
2	Shows Underwater View
3	Shows Transparent Rides
4	Shows Transparent Scenery
5	Makes Supports Invisible
6	Makes People Invisible
7	Show Gridlines on land
8	Shows Height marks on land
9	Shows Height marks on tracks
V	Removes Vertical Faces from land (LL add-on)
H	Removes Base faces from land (LL add-on)

Pause	Pauses the game
Page Up	Zoom Out
Page Down	Zoom In
Return	Rotate
Tab	Map
F1	Land Tool
F2	Water Tool
F3	Scenery Selection Window
F4	Footpaths Selection Window
F5	Ride Selection Window
F	Finances Window
D	Research Window
P	Park Status Window
R	Rides Info. Window
G	Guest Info. Window
M	Recent Messages
S	Staff Window

Backspace	Close the top open window
Shift + Backspace	Close All open windows
Escape	Cancel Construction
Z	Rotate Ride