  After the appearance of my preprint [T3] (Special Lagrangian geometry and
slightly deformed algebraic geometry (spLag and sdAG), Warwick preprint
22/1998, alg-geom/9806006, 54 pp.). I received an e-mail from Cumrun Vafa, who
recognized that the subject is closely related to that of his preprint [V]
(Extending mirror conjecture to Calabi-Yau with bundles, hep-th/9804131, 7
pp.). This text started out as an e-mail ``reply'' to his letter. All the
constructions we propose have well known ``spectral curve'' prototypes (see for
example Friedman and other [FMW], Bershadsky and other [BJPS] and a number of
others). Roughly speaking, our constructions are the spectral curve
construction plus the phase geometry described in [T3]. So this text should
really come before [T3], as motivation for the development of the geometry of
the phase map in [T3].
