text: create table axes (
      session char(128) not null,
      value char(128) not null,
      axis int not null
      );
      
  create table done (
      session char(128) not null,
      value1 char(128) not null,
      value2 char(128) not null,
      status int,
      primary key(session,value1,value2)
      );
      
      
  