#slide[
== Title
#columns(2)[
+ airhdl
+ AGWB
+ AutoFPGA
+ Cheby
+ Corsair
+ FPGA Vendors
+ hdl_register
+ II & CII
+ IP_XACT
+ Opentitan Register Tool
+ Register Wizard
+ RgGen
+ SystemRDL
+ vhdMMIO
+ wbgen2
+ Others (2)
]
]
Generated slide:

The extra space is gone if I remove the #columns(2)[ command.