relay-and-callfeature implemented recently in the OmniBridge contracts. In the last section of the manual there is also an instruction on how to transfer ETH to WETH on the xDai chain using a single operation. This may not be used often but some users may find it handy.
_to(address) the address of the OmniBridge contract on the xDai chain:
_value(uint256) with amount of WBNB to be bridged (bridge fees will be subtracted from this value)
_data(bytes) with two pieces concatenated:
0xbf3d6f830ce263cae987193982192cd990442b53the value in
wrapAndRelayTokensmethod and enter the amount of ETH to bridge to the xDai chain: