Quote:(* Writes call to user handler at specified location. If handler returns true, overwritten commands are executed
    in original way. Otherwise they are skipped and Context.RetAddr is used to determine return address.
    Returns address to a default code bridge. It's possible to specify minimum number of bytes to be overriden by hook patch or nopped *)
function HookCode (Addr: pointer; HandlerFunc: THookHandler; {n} AppliedPatch: PAppliedPatch = nil; MinPatchSize: integer = 0): pointer;

Quote:(* Replaces original function with the new one with the same prototype and 1-2 extra arguments.
    Calling convention is changed to STDCALL. The new argument is callable pointer, which can be used to
    execute original function. The pointer is passed as THE FIRST argument. If custom parameter address
    is given, the value of custom parameter will be passed to handler as THE SECOND argument. If AppliedPatch
    pointer is given, it will be assigned an opaque pointer to applied patch data structure. This
    pointer can be used to rollback the patch (remove splicing).
    Returns address of the bridge to original function *)
function StdSplice (OrigFunc, HandlerFunc: pointer; CallingConv: TCallingConv; NumArgs: integer; {n} CustomParam: pinteger = nil; {n} AppliedPatch: PAppliedPatch = nil): {n} pointer;