Swapping Ctrl-Key with Atl-Key, Caps-Lock for Hyper-Key

[goncholden via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>]

I would like to swap Ctrl-Key with the Atl-Key and use Caps-Lock for Hyper-Key. Want to use the Dvorak layout.

setxkbmap -layout us -variant dvorak

Results from xmodmap are as follows

xmodmap -pm
xmodmap: up to 4 keys per modifier, (keycodes in parentheses):
shift Shift_L (0x32), Shift_R (0x3e)
lock Caps_Lock (0x42)
control Control_L (0x25), Control_R (0x69)
mod1 Alt_L (0x40), Alt_R (0x6c), Meta_L (0xcd)
mod2 Num_Lock (0x4d)
mod3
mod4 Super_L (0x85), Super_R (0x86), Super_L (0xce), Hyper_L (0xcf)
mod5 ISO_Level3_Shift (0x5c), Mode_switch (0xcb)

xmodmap -pke | grep "Control\|Alt\|Meta\|Hyper\|Super"
keycode 37 = Alt_L Meta_L Alt_R Meta_R
keycode 64 = Control_L NoSymbol Control_L
keycode 105 = Alt_L Meta_L Alt_R Meta_R
keycode 108 = Control_R NoSymbol Control_R
keycode 133 = Super_L NoSymbol Super_L
keycode 134 = Super_R NoSymbol Super_R
keycode 204 = NoSymbol Alt_L NoSymbol Alt_L
keycode 205 = NoSymbol Meta_L NoSymbol Meta_L
keycode 206 = NoSymbol Super_L NoSymbol Super_L keycode 207 = NoSymbol Hyper_L NoSymbol Hyper_L

Have started doing as follows but am getting confused.

!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

clear mod3

!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!! Set Alt-Key (Meta-Key) to position of Ctrl-Key

clear mod4

keycode 37 = Alt_L Meta_L Alt_R Meta_R
keycode 105 = Alt_L Meta_L Alt_R Meta_R

add mod4 = Alt_L Meta_L Alt_R Meta_R

!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!! Set Ctrl-Key to position of Alt(Meta)-Key

keycode 64 = Control_L NoSymbol Control_L
keycode 108 = Control_R NoSymbol Control_R

!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Set Hyper-Key to position of Ctrl-Key